Cattle guard



rA. J. SHAW CATTLE GUARD Feb. 22, 1927.

Filed JulyZl, 1924 Patented Feb. 22, 1927.

CATTLE Application lei July 21,

The present invention relates to improvements in cattle guards for use, on r ilways for. the purpose preventing cattle, horses or stock from trespassing upon or passing over the railway tracks, causing damage and derailments. rlhe guard is of.` the rotary type, and is especially designed in sections or standard units and parts. adapted to the standard railway road bedin order that the appliance may with facility be placed in position and Awith equal facility may be removed when required, for the purpose of making necessary repairs to the tracks or roadbe'd. y Y

T he primarv7 object ot' the invention is the provision of a device ot this character which is comparatively inexpensive in cost of production and in which the parts are interchangeable; which is simple in construcy tion, and, as it comprises a minimum number of parts which are comparatively light in weight, may be handled by a single trackhand or other individual.

The invention consists in certain'novel combinations and arrangements of parts as will hereinafter be more fully pointed out and claimed. In the accompanying drawings I have illustrated one'complete example of the physical embodiment of my inventionin which the parts are combined and arranged in accord with the best mode I have thus far devised for the practical application of the principles of my invention. It will be understood, however, that different arrangements of the standardized units orl sections may be used other than that illustrated, and the appliance is applicable for use at various places along the railroad, as for instance on bridges and tunnels, or on the approaches thereto.

Figure l is a plan view of a portion of a railway showing portions or sections of the complete cattle guard, and showing also uncomple-ted portions-ot the guard 'for convenience of illustration. i

Figure 2 is an enlarged detail end view of a portion of one ot the intermediate units or sections used between the rails of the track, and showing the relation thereto ol: the track rail. Y

Figure 3 is a view in side elevation of a portion of one of the rotary guards.

For a ready understanding ot' the invention I have indicated a portion of a railway track of standard gage and including the track rails l and cross ties Q. In as- ARTHUR J'. SIIVI, OF SPOKA'NE, XZASIINGTGN.

GUARD.

1924. Serial No. 7214278.

seinbling the appliance two outer or trackside units 3 and Ll are usually alined with an. intermediate unit 5 located between the rails.

rllhe tracks-ide units or frames 3 and l may be of metal and are of oblong shape to lie parallel with the tracks as indicated in Figure l.y l rihe greater' dimension or length ot'. these trackside frames corresponds to the length and width of the square, intermediatetrame 5 which is located between the tracks or track rails, and other features common to both ,l the trackside and intermediate rame's will appear hereinafter.

ylhe trames are all open, rectangular structures, and each traine is provided, as at its ifour corners, with a perforated lug or ear 6 through which aspike or bolt 7 is passed to securely anchor rvthe frame to the cross ties.

rlhe trackside frames 3 anl 4l each have provided in their end bars 8, a' number of diagonal notches 9 extending downwardly a suitable distance from the top edge of the bar, and between these end bars "a: central, intermediate, transverse bar l0 is provided in the frame which is fashioned with similar notches ll in its upper edge. The diagonal notches in the end and intermediate bars are alined, three sets of notches being illustrated in the drawings for each frame, but it will be understood, of course, that the number of sets may be added and varied if desired.

rlhe intermediate frame sections or square `frames have in the upper edges of the opposed parallel bars l2 a series of diagonal notches 13 and these frames also have cross, central, intermediate bars lll with diagonal notchesV l5 in their upper edges. The series of notches in the outer bars are alined with the series or' notches in the intermediate bar of each frame, and it will be seen in Figure l that these frames may be used between the track rails with the intermediate bar lll either parallel with the track rails or at right angles thereto, as desired. The trackside frames 3 and l are interchangeable, but the notched bars of these frames are always placed at right angles to the track rails.

A standardized rotary guard is adapted for use with any and all ot' the frames, said guard including a pipe or hollow shaft 16 having end collars 17 and fashioned with journals 18 at the extreme ends beyond these collars 17. At the longitudinal center the .eha'tt is provided :l pair o l' Hpatfed collare lil and Ml between which is provided t journal member 2l. A spiral blade Q2 is fashioned at one side ot the renter ol the shalt and a similar spiral blade is fashioned at the other end ot the sha't'tn Thesse rotary guard members are stand ardized as `to size, shape and material, and they may be east as integral unite, or otherwise fashioned, it desired, preferably with blunt etlges to the spiral blades, made simi* lar to the twist or worms ot an auger,` and smooth journals at .1S and 2l; and the pitch of the spiral blades in preferably low in order that the spiral edges may he brought into proper Close proximity.

After the rectangular iframes have been laid and secured in proper position, each trarne is supplied with its rotary guards,

the latter lmelngl placed liueierably in trans verse order in the frames with tliejorn'nals 18 and 2l resting in complementary notches of the frames, and the guarde are retained in place bytheir own weight. As indicated in Figures l and 2, the spiral blades otl ad joiningr guards, at their-edges, are brought into close proximity for the purpose ot forming pockets between the spiral blades. l'twll be apparent that, should a cow attempt to step upon, or Walk across, the appliance, the pressure `of the hoot' upon the freely rotatable guard Will cause the latter to revolve. Causing a forward or backward and edewise movement: ot the foot, thus ineuring an insecure foot-hold, with eonsequent 'frustration of the attempt on the part of the animal to trespass upon the railroad.

It is obvious that a guard may be removed troni its bearings by first elevating one ond end then swinging, or rollingl the guard tree ot its iframe, in order to grain autres to the road bed, and ot course, all ol. the `ritarda may be removed in this manner, it desired, and in ease an animal jinnps over a single unit, another unit may be added lietween the rails to making :sealing impossible. lit' more than one track is to be guarded, the units should be extended acrose the parallel tracks with connecting units arrose and between the traele. t

Having thus `fully describet'l my invention, what I claim as new and desire to secure by Letterel Patent cattle guard comprising a pair ol ree-- tangular traekeide 'trames and a rectangular between-the-rails-traine, the ilormer havingl a length eorreepondintef to the dialuetritra! dimensions ot the latter, said trames haring notched end bare and notched inter1nediate bars, and sets ot longitudinally and transversely extending interchangeable rotary guards having journals supported in said bars.

In testimony whereof I atlix niy signature.

ARTHUR J. SHAV. 

